If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y in (-oo:+oo)
(4/9)*y^2-25 = 0
4/9*y^2 = 25 // : 4/9
y^2 = 225/4
y^2 = 225/4 // ^ 1/2
abs(y) = 15/2
y = 15/2 or y = -15/2
y in { 15/2, -15/2 }
| 8x+2-7x=10 | | [[w]/[2]]=54 | | 7x=4900 | | 16-4(x+3)=2 | | 10=4/5n-2 | | 65=[[x]/[5]] | | -4+1.5x= | | n-2=-2n+13 | | 5x-11=-46 | | 8x+2-5x=10 | | -3x-3+4x=10 | | 9=44-b | | 3x-5(x+2)=4x-2 | | 4(x^2+7x-20)=0 | | x*347+(x+60)*225=33520 | | 102=3 | | 2(2x-4)+4x= | | 7x+2=-3+5x+9 | | -12x-9=16 | | 4x+9y=8 | | (14+2x)=9 | | (2x+10)(2x+4)=120 | | 10(3m+1)+m=5(4m-3)+6m | | 6x-5=4x+33 | | 3x-x+4=(2x-1) | | 6a^3=51 | | 14=4x^9 | | -8=-y+35 | | 3f^5=5+f | | 8-2(x-1)=9+x | | lnx=3.1 | | 2+6x=19x+3 |